Here are the big developments of the last week, which started with the abrupt firing of Comey:

The FBI and Congress are investigating Russian interference in the 2016 election, including any possible ties between the Trump campaign and Moscow. The U.S. intelligence community — including the FBI, CIA and NSA — has concluded that Russia meddled in the election.

May 9: Trump fires the FBI's chief. White House spokespeople immediately say that Trump's decision had nothing to do with Russia, but instead that the president dismissed Comey because the Justice Department had criticized him.

May 10: Trump holds a closed-door meeting with the Russian foreign minister and Moscow's ambassador to the U.S. at the White House. American news media are not invited to the meeting, but a Kremlin-friendly news agency from Russia is present.

May 15: The White House says the Post report is false, without specifying which parts are incorrect. "I was there. He didn't do it," says national security advisor H.R. McMaster, who refuses to take questions.

May 16: Reports indicate that a memo Comey wrote in February shows that the president asked him to shut down the FBI investigation into Flynn. The story is first reported by The New York Times and confirmed by NBC News, The Wall Street Journal and others. House Oversight Committee Chairman Jason Chaffetz, R-Utah, demands that the FBI turn over records related to Trump's conversations with Comey, saying the reports "raise questions as to whether the president attempted to influence or impede the FBI's investigation."